Flect/guard

Typeguards for Flect types

Introduction

Flect/guard is a library for validating that arbitrary JavaScript objects conform to a Flect type.

Usage

const Animal = record({
	legCount: numberType,
	sound: stringType
});
type Animal = Reify<typeof Animal>;

const v = new GuardChain();
const recV = new RecordValidator(v);
v.add(defaultGuards);
v.add(recV);

const maybeAnimal: unknown = {legCount: 3, sound: "woof"};
const animalGuard = v.get(Animal)!;
if (animalGuard(maybeAnimal)) {
	console.log(maybeAnimal.sound); // Goes 'woof'
}